A large rock has a mass of 9,000 grams. What is the mass of the rock in kilograms ?

Answers

Answer 1
Answer: The mass of the rock in kg is 90,000 kg
Answer 2
Answer: The mass of the rock is 90,000

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Explain how your knowledge of place value helps you divide a number in the thousands by whole numbers to 10. Give an example to support your explanation. Please help, I will appreciate it!!!!!!!!!!!!!!!!!!!!!!!!!!

Why doesn't anybody help me??????????? ????????????????????????????????????? ???????? 
Please, I have been waiting for 7 hours, the website brainly is wrong it says " just now".

Answers

Place value is the value each digit has in its position: in order from higher to lower value, there is thousands, hundreds, tens, and ones.
When you divide by 10, you are moving (only once) every digit from its present place value to the right.
For example 6430 : 10= 643, you have moved every digit to the right, making the zero disappear (or better yet, separated by a hidden and in this case useless comma).

The area is 30 square centimeters and a height with 10 centimeters. What is the length of the base?

Answers

So,

The formula for the area of a rectangle is:
A = l * w

We will consider l to be the height.

Substitute the given values.
30 = 10 * w or 10w

Divide both sides by 10.
3 = w

The length (I would call it the width, since it is shorter) of the rectangle is 3 centimeters.
30/10=3 3 cm is the length.

Suppose that many large samples were taken from population A, which is normally distributed, and population c, which is not normally distributed. The means of the samples of which of the following populations would approximate a normal distribution?a. both population a and population c
b. neither
c. population c
d. population a

Answers

Answer:

Both populations -Apex

Step-by-step explanation:

Ed spent 8.5% of his savings on lunch, which cost $5.25. How much did he have in savings before lunch?

Answers

$61.76 because you divide 100% by 8.5 then multiply the answer by 5.25... hopethat helped ;)
100 ÷ 8.5= 11.7647058824 then 11.7647058824 × 5.25= 61.7647058824 and round to 61.76
$61.76 because you divide 100% by 8.5 then multiply the answer by 5.25.

The sum of three consecutive odd integers is -9. what are the numbers?

Answers

(-2)+(-3)+(-4)= -9 this is the right answer to your question.

The ratio of girls to boys in the grade is 9 to 11. If there are 135 girls, how many boys are there?

Answers

There would be 165 boys in the grade.

I got this because I did 135/9. I got 15. Then I multiplied 11*15.

There is 165 boys. Multiply both sides by 15 to get an equal ratio